Mj. Alves et al., NOVEL 4-SUBSTITUTED 3H-(8-AMINO-6-OXO)PYRROLO[3,4-F][1,3,5]TRIAZEPINES FROM (Z)-N2-(2-AMINO-1,2-DICYANO)FORMAMIDINE AND CARBONYL-COMPOUNDS, Journal of the Chemical Society, Chemical Communications, (10), 1993, pp. 834-836
The title formamidine reacts with ArCHO (where Ar = Ph, 4-MeC6H4,4-MeO
C6H4,4-FC6H4) and acetone in the presence of a base to give products,
shown by X-ray crystallography (Ar = Ph), to be the title compounds 4a
-e.